##
#
# Snaarpy: Guitar chord parser and formatter
# Copyright (C) 2009 Alberto Gonzalez
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
##

'''
Base library for file output
'''

import logging
logger = logging.getLogger(__name__)

from snaarpy.output.writer import OutputFileWriter

# import all plugins
import latex, pdf, null

for ext, plugin in OutputFileWriter.plugins.iteritems():
    logger.debug("Loaded input plugin for %s: %s" % (ext, plugin))

class UnsupportedOutputError(Exception):
    pass

def print_plugin_list():
    print "Available output filters:"
    for plugin in OutputFileWriter.plugins.itervalues():
        print "    %s\t%s" % (plugin.extension, plugin.description)


def write_file(f, extension, songs):
    try:
        plugin = OutputFileWriter.plugins[extension]
    except KeyError:
        raise UnsupportedOutputError("Output file format '%s' is not supported" % extension)
    writer = plugin(f)
    writer.beginOutput()
    for model in songs:
        model.accept(writer)
    writer.endOutput()
